Trump made the remarks during a 2017 briefing ahead of a visit with the Indian Prime Minister.
During a meeting with the Prime Minister, Trump also indicated that he didn’t know that India and China shared a border.
Trump also mispronounced the African nation of Namibia during a meeting with African leaders.
Politico – Trump’s diplomatic learning curve: Time zones, ‘Nambia’ and ‘Nipple’
CNN – Critics laugh off Trump’s mispronunciations once again
India Today – Donald Trump thought Nepal and Bhutan were in India. Called them Nipple and Button